In s u lato r-b rag ket



(No Model.)

H. E. OHUBBUGK. INSULATOR BRACKET.

No. 436,120. Patented Sept. 9, 1890.

l NVENTUH WITNESSES UNITED STATES PATENT OFFICE.

ll. EUGENE CIIUBBUCK, OF SPRINGFIELD, OHIO.

INSULATOR-BRACKET.

SPECIFICATION forming part of Letters Patent No. 436,120,-dated September 9, 1890. Application filed November 4, 1889- Serial No. 329,248. (No model.)

I'o aZZ whom it may concern.-

Be it known that I, H. EUGENE OHUBBUCK, a citizen of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements inlBrackets for Insulators, of which the following is a specification.

My invention relates. to improvements in brackets for insulators.

The object of my invention is to provide a bracket of simple construction, capable of use with insulators of glass or other fragile substance, and'adapted .to be readily secured to walls of brick or to any other suitable place of attachment.

In the accompanying drawings, Figure lis a perspective view of a bracket'embodying my invention. Fig. 2 is a front elevation of the same.

In the said drawings, A represents the base of the bracket, which is preferably formed of a single piece of metal having the projecting arm 13, curved outwardly and upwardly, as-

shown, and provided at the top with a screwthreaded portion C, on which the insulator is adapted to be secured.

Glass insulators as usually constructed are adapted to be screwed on wooden brackets. The insulators are provided with an internal screw-threaded opening, which screws onto the wooden stem of the bracket. These screwthrcaded openings in the insulators vary in size, owing to the different shrinkages in the cooling of the glass and to imperfections in forming. For this reason many of the insulators cannot be used upon the brackets usually provided. To obviate this diificulty, I form my improved bracket of metal having-a certain amount of resilience, and provide the screw-threaded portion 0 with a chamber a and small slotted openings a a',. extending through the walls of the seat or screw-threaded portion 0 into the chamber a. By this construction the seatportion O is adapted to yield as the insulator is screwed thereon, and thus readily adjust itself to the inequalities in the formation of the openings in the insulators, and thus permit an insulator with any usual variation to screw onto the brackets and to fitfirmly thereon without any dangerof breaking the fragile material of which the insulator is composed.

Brackets of this character are required in many cases to be attached to the surface of brick walls.

To provide for readily securing the brackets of this character, I provide three slotted openings Z) b b in the-base 'A, said openings being located in said base in the form of a triangle. These slotted openings receive the fastening bolts or screws, and by their peculiar construction and location the fasteningbolts are permitted to pass into the spaces between the bricks of a brick wall, and at the same time secure the proper adjustment of the bracket with reference [0 said fast-en ing-bolts.

It will be seen that a bracket as thus described can be modified to suit insulators of any desired size or form, the screw-threaded arm being adapted to-adjust itself to compensate for any natural variation in the size of thescrew-threaded openings of said insulators by reason of the resilient material and the slotted openings therein. The peculiar construction of the base with the slotted open-.

ings arranged in atriangular position, as described, permits the bracket to be secured in a 'suitableposition to a brick wall or other desirable points, the slotted openings and the arrangement thereof permitting the fastening-screws to be varied with reference'to the base, so that the said screws will pass between the bricks of a wall or to bring them in any other suitable or desirable position.

Having thus described my invention, I claim- I 1. An insulator-bracket, substantially as described, having a screw-threaded proj eating arm formed of resilient material and provided with slotted openings extending through the walls of said screw-threaded portion, substantially as described.

.2. An insulator-bracket,substantially as described, having a base constructed with three slotted openings arranged in a triangular position, as and for'the purpose specified.

3. An insulator-bracket formed in a single niece with a base having three slotted open- In testimony whereof I have hereunto set Tings, gdescribed, a-screw-t-hreaded projectmy hand this 29th day of October, A. D, 1889. i'ng arm of resilient material formed with v a chamber and slotted openings extending EUGENE CHUBBUOK' 5 through the walls of said screw-threaded Witnesses:

portion into said chamber, substantially as CHAS. I. WELCH, specified. -CHASE STEWART. 

